Ge Yunsheng (identified as Ge Sanduo in the Southern Song Dynasty) wanted to jump off a building due to a failure in love, but was accidentally bound to the two-realm shuttle system and traveled to the Southern Song Dynasty. Due to local rules, he was forced to marry four daughters, Shao Ronger, Lan Qianyue, Ling Yao and Wei Yunran, and faced a high head tax. With his modern thinking, he earned 800 taels of silver from selling Erguotou glass bottles, bought land and a house to improve his life, and gradually fell in love with his fourth wife. Later, he bought Southern Song Dynasty official kiln porcelain at a low price and planned to return to modern times to resell it, starting a road of arbitrage between the two worlds.
